World-first COVID-19 human challenge trial

Updated February 2 2022 - 9:11pm, first published 9:08pm
Volunteers have been deliberately exposed to COVID-19 in a trial in Britain.
Volunteers have been deliberately exposed to COVID-19 in a trial in Britain.

The world's first "human challenge" trial in which volunteers were deliberately exposed to COVID-19 has been conducted in the UK and found to be safe for healthy young adults.

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